Is he in the marketing team at Google??? Seriously, his blog post beats the hard-core Google Fanboys!
I'm not able to use Google Docs as a replacement for Word and Powerpoint yet when I'm doing precise positioning of elements. I'd like to use Google Docs, but it's just too limited for my needs.
I use both Google Docs and Office 2007 on my PC, depending on my needs for a particular document, eg. if I want to access it from multiple computers - Google Docs is great.